Many Professional MBOX to PST Converter Software availables over the internet, that can enable for conversion of MBOX file to PST format. Here I also suggest more suitable and cost effective email migration software. It can easily move all emails and other data of MBOX files from different mail client to Outlook PST format. This software saves converted data in new and existing PST file and it's also support corrupted as well as normal MBOX files. I also suggest before purchasing any paid tool must check the demo version of this software.
Check the free version of this tool, here:- http://migrateemails.com/2015/08/19/convert-mbox-mail-into-outlook-pst-with-mbox-to-pst-converter/

One can also get the help of MBOX to PST Converter online to convert MBOX emails into PST format. This tool support MBOX compatible email applications like Thunderbird, Eudora, PocoMail, Apple Mail etc; convert them and save them into PST format. After conversion, you have imported the converted PST file within MS Outlook 2016 and all below versions.